As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT FROM FL410 BLEED TRIP OFF RIGHT SIDE (NR 2). RESET WITH TRIP RESET BUTTON AND DUCT PRESSURE INCREASE AND PRESSURIZATION CABIN CLIMB. PERFORMED FIM TASK 36 10 00 810 801 AND PNEUMATIC SYSTEM TROUBLESHOOTING TASK 36 10 00 810. PERFORMED HIGH STAGE VALVE/ HIGH STAGE REGULATOR HEALTH CHECK REF MM36 11 00 FOUND HIGH STAGE REGULATOR BAD. REMOVED AND REPLACED HIGH STAGE REGULATOR REF MM 36 11 07.